Which abbreviation denotes the frequency pattern 'three times a day' for medications?

Which abbreviation denotes the frequency pattern 'three times a day' for medications?

• A. t.i.d
• B. q.d
• C. b.i.d
• D. q.i.d

Answer: (A)

Three times a day is tid, short for ter in die. This means you take the medication at three evenly spaced times within a 24-hour period (for example, morning, midday, and evening). It’s the standard shorthand used to indicate three doses in one day. In contrast, q.d. stands for once daily (quaque die), b.i.d. means twice daily (bis in die), and q.i.d. means four times daily (quater in die). These reflect different dosing frequencies, which is why tid is the correct choice for three times daily.

Three times a day is tid, short for ter in die. This means you take the medication at three evenly spaced times within a 24-hour period (for example, morning, midday, and evening). It’s the standard shorthand used to indicate three doses in one day.

In contrast, q.d. stands for once daily (quaque die), b.i.d. means twice daily (bis in die), and q.i.d. means four times daily (quater in die). These reflect different dosing frequencies, which is why tid is the correct choice for three times daily.